import { app, shell, BrowserWindow, ipcMain, globalShortcut, dialog } from 'electron'
import { join } from 'path'
import { electronApp, optimizer, is } from '@electron-toolkit/utils'
import icon from '../../resources/icon.png?asset'
import { readDir } from './readDir'
import { getElectronVersion } from './version'

function createWindow() {
  // Create the browser window.
  const mainWindow = new BrowserWindow({
    width: 1000,
    height: 620,
    show: false,
    autoHideMenuBar: true,
    icon,
    webPreferences: {
      preload: join(__dirname, '../preload/index.js'),
      sandbox: false,
      // 禁用同源策略，允许跨域请求
      webSecurity: false,
      devTools: is.dev
    }
  })

  mainWindow.on('ready-to-show', () => {
    mainWindow.show()
  })

  mainWindow.webContents.setWindowOpenHandler((details) => {
    shell.openExternal(details.url)
    return { action: 'deny' }
  })

  // HMR for renderer base on electron-vite cli.
  // Load the remote URL for development or the local html file for production.
  if (is.dev && process.env['ELECTRON_RENDERER_URL']) {
    mainWindow.loadURL(process.env['ELECTRON_RENDERER_URL'])
  } else {
    mainWindow.loadFile(join(__dirname, '../renderer/index.html'))
  }

  // 设置DevTools快捷键
  globalShortcut.register('CommandOrControl+Shift+i', function () {
    mainWindow.webContents.openDevTools()
  })

  return mainWindow
}

// 程序单例模式
let myWindow = null
const gotTheLock = app.requestSingleInstanceLock()
if (!gotTheLock) {
  // 如果已经有同样的该程序正在运行，则不启动
  app.quit()
} else {
  // 如果检测到有同样的该程序正在试图启动...
  app.on('second-instance', (event, commandLine, workingDirectory, additionalData) => {
    if (myWindow) {
      // 弹出系统提示对话框
      dialog.showMessageBox({
        message: '此程序已经正在运行'
      })
      // 如果该程序窗口处于最小化状态，则恢复窗口
      if (myWindow.isMinimized()) myWindow.restore()
      // 将该程序窗口置为当前聚焦态
      myWindow.focus()
    }
  })

  // This method will be called when Electron has finished
  // initialization and is ready to create browser windows.
  // Some APIs can only be used after this event occurs.
  app.whenReady().then(() => {
    // Set app user model id for windows
    electronApp.setAppUserModelId('com.electron')

    // Default open or close DevTools by F12 in development
    // and ignore CommandOrControl + R in production.
    // see https://github.com/alex8088/electron-toolkit/tree/master/packages/utils
    app.on('browser-window-created', (_, window) => {
      optimizer.watchWindowShortcuts(window)
    })

    // IPC test
    ipcMain.on('ping', () => console.log('pong'))

    myWindow = createWindow()

    app.on('activate', function () {
      // On macOS it's common to re-create a window in the app when the
      // dock icon is clicked and there are no other windows open.
      if (BrowserWindow.getAllWindows().length === 0) createWindow()
    })
  })

  // Quit when all windows are closed, except on macOS. There, it's common
  // for applications and their menu bar to stay active until the user quits
  // explicitly with Cmd + Q.
  app.on('window-all-closed', () => {
    if (process.platform !== 'darwin') {
      app.quit()
    }
  })
}

// In this file you can include the rest of your app"s specific main process
// code. You can also put them in separate files and require them here.
// 以上英文注释是Electron官方的main.js注释，意思是通过require()来引入其他代码文件。
// 但是由于Vite的机制，打包的时候会忽略require()，因此只能通过import方式来引入外部方法。
ipcMain.on('readDir', readDir)
ipcMain.handle('getElectronVersion', getElectronVersion)
